The small Dutch town of Hengelo is about to test out a new kind of concrete paving slab that actually grabs onto the car-exhaust pollutant nitrogen oxide (a key smog and acid rain ingredient) sucking it out of the air and rendering it harmless. The special bricks contain a component based on titanium dioxide that acts…
»8/07/08 5:39am 8/07/08 5:39am